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Microchip Technology 1N4741PE3/TR12
- Part No.:
- 1N4741PE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4741PE3/TR12.pdf
- Description:
- DIODE ZENER 11V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,029
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Product details
Overview
1N4741PE3/TR12 from Microsemi is a 11 V, ±5% tolerance, 1 W axial-lead silicon Zener diode in DO-41 plastic package, rated for 23 mA test current, 8 Ω dynamic impedance at IZT, and 5 μA reverse leakage at 8.4 V, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4741PE3/TR12 datasheet, 1N4741PE3/TR12 pinout, 1N4741PE3/TR12 application, or 1N4741PE3/TR12 equivalent, key selection factors include its 11 V nominal Zener voltage, 1 W steady-state dissipation at TL < 105 °C, DO-41 mechanical compatibility, RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR12).
Technical Context
This device operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. It exhibits a sharp knee at 23 mA test current with 8 Ω dynamic impedance, and its temperature coefficient is near zero at ~11 V, minimizing drift over -65 °C to +150 °C operating range.
The 1N4741PE3/TR12 uses a void-free thermosetting epoxy case (UL94V-0), tin-lead or RoHS-compliant matte-tin terminals, and cathode polarity marked by a band. Its thermal resistance is 45 °C/W junction-to-lead (3/8″ lead length) and 105 °C/W junction-to-ambient on FR4 with defined copper pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V ±5% at 23 mA - defines regulated output level with tight production control |
| Power Dissipation | 1.0 W at TL < 105 °C - sets maximum continuous thermal load on leads |
| Dynamic Impedance (ZZT) | 8 Ω at IZT = 23 mA - determines regulation stiffness under small-signal AC variation |
| Reverse Leakage Current | 5 μA max at VR = 8.4 V - ensures low quiescent error in high-impedance bias networks |
| Maximum Regulator Current | 414 mA at TA = 50 °C - establishes peak DC current capability before thermal derating |
| Forward Voltage | 1.2 V max at 200 mA - defines conduction loss when used as clamp in forward direction |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design using standard lead-mounting practices |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by a single color band; body diameter 2.0–2.7 mm, overall length 4.5–5.5 mm, lead diameter 0.4–0.6 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node during Zener operation; forward conduction path |
| Cathode | Banded end | Connected to higher-potential node during regulation; defines Zener breakdown polarity |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N47xxA series | Industry-standard footprint and electrical behavior for drop-in replacement across suppliers |
| RoHS-compliant "e3" suffix | Matte-tin terminal plating meeting EU Directive 2011/65/EU without lead or hexavalent chromium |
| Tape-and-reel packaging ("TR12") | Standard EIA-296 compliant reel with 12,000 units per reel for automated SMT placement compatibility |
| Moisture sensitivity Level 1 | No dry-pack required per IPC/JEDEC J-STD-020B - simplifies handling and storage logistics |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special ESD controls in assembly |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stable 11 V reference in linear regulator feedback loop or ADC reference divider. IC Role / Device Role / Timing Role: Voltage reference element providing fixed potential against which output is compared. Use Value: Delivers 11 V ±5% with 8 Ω dynamic impedance, enabling sub-1% output regulation accuracy in discrete feedback networks. | Use Scenario: Protection of microcontroller I/O pins from transient voltage spikes exceeding 11 V. IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground when voltage exceeds VZ. Use Value: Limits voltage to ≤11.6 V (max VZ + ΔV due to ZZT × Isurge) during 414 mA surge events. |
| Current Source Bias | Signal Level Translation |
Use Scenario: Constant-current source for LED bias or op-amp input stage using resistor-Zener configuration. IC Role / Device Role / Timing Role: Voltage-defined current limiter establishing predictable IOUT = (VIN − VZ)/R. Use Value: Maintains stable current over -65 °C to +150 °C with <±0.05%/°C tempco near 11 V. | Use Scenario: Level-shifting logic signals between 12 V and 5 V domains using bidirectional Zener clamp. IC Role / Device Role / Timing Role: Bidirectional voltage limiter defining upper and lower signal bounds. Use Value: Clamps high-side to 11 V and low-side to −1.2 V (forward VF), preserving signal integrity without active components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4741A | No "e3" RoHS suffix; Sn/Pb plating; no TR12 tape-and-reel | Requires leaded solder process; manual or bulk-only handling | Select when legacy Pb-based assembly or non-automated procurement is required |
| MMSZ4701T1G | Surface-mount SOD-123 package; 11 V ±5%; 500 mW rating | Lower power, smaller footprint; unsuitable for >350 mA continuous loads | Select for space-constrained PCBs where 1 W dissipation is not needed |
Compared with 1N4741A and MMSZ4701T1G, the 1N4741PE3/TR12 uniquely combines full 1 W dissipation, RoHS compliance, and EIA-296 tape-and-reel packaging in the industry-standard DO-41 through-hole form factor-making it optimal for high-reliability, automated, lead-free production of industrial power supplies.
Availability
1N4741PE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and test equipment requiring stable component supply with full RoHS compliance and automated placement support.
Supply support for 1N4741PE3/TR12 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed specifically for robust, cost-effective voltage regulation in harsh-environment power systems where long-term stability, wide temperature operation, and JEDEC-standard interoperability are critical.
FAQ
What is the Zener voltage tolerance of the 1N4741PE3/TR12?
The 1N4741PE3/TR12 has a nominal Zener voltage of 11 V with a tolerance of ±5%, as confirmed by the "A" suffix in its JEDEC designation and verified in Microsemi's official datasheet revision C (2005). This tolerance applies under standard test conditions: 23 mA test current and 25 °C lead temperature. The "e3" suffix indicates RoHS compliance but does not affect voltage tolerance.
Does the 1N4741PE3/TR12 support automated assembly?
Yes, the 1N4741PE3/TR12 supports automated assembly via its "TR12" suffix, denoting EIA-296 standard tape-and-reel packaging containing 12,000 units per reel. Its DO-41 axial-leaded form factor is compatible with standard pick-and-place feeders configured for radial/axial components, and its matte-tin plating ensures reliable solderability with lead-free reflow profiles.
What is the maximum continuous current the 1N4741PE3/TR12 can regulate?
The 1N4741PE3/TR12 supports a maximum regulator current (IZM) of 414 mA at ambient temperature of 50 °C, as specified in Microsemi's electrical characteristics table. At higher temperatures, current must be reduced per the derating curve in Figure 1; at 105 °C lead temperature, the device sustains 1.0 W dissipation, corresponding to ~93 mA at 11 V.
How does the thermal resistance of the 1N4741PE3/TR12 impact PCB layout?
The 1N4741PE3/TR12 has a junction-to-lead thermal resistance of 45 °C/W when leads are trimmed to 3/8″ (10 mm) from the body. For optimal thermal performance, PCB traces connected to its leads should use ≥1 mm width and connect to ≥4 mm² copper pads. On FR4 with 1 oz Cu, junction-to-ambient resistance rises to 105 °C/W-so board-level copper area directly affects safe operating current.
Is the 1N4741PE3/TR12 suitable for high-reliability applications like automotive or aerospace?
Yes-the 1N4741PE3/TR12 meets MIL-PRF-19500 screening levels when ordered with appropriate prefixes (e.g., MV for JANTXV), and its base specification includes operation from −65 °C to +150 °C, moisture sensitivity Level 1, and ESD immunity per MIL-STD-750 Method 1020. While the standard 1N4741PE3/TR12 is commercial-grade, Microsemi offers screened variants for automotive and aerospace use cases.
1N4741PE3/TR12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±10%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4741PE3/TR12 FAQ
1.How can I place an order for 1N4741PE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4741PE3/TR12 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1N4741PE3/TR12 reliable?
The price and inventory of 1N4741PE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4741PE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4741PE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4741PE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4741PE3/TR12?
1N4741PE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4741PE3/TR12 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1N4741PE3/TR12?
For technical support, including 1N4741PE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4741PE3/TR12 requirements.
6.How does Aetrix verify that 1N4741PE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4741PE3/TR12 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N4741PE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4741PE3/TR12?
All 1N4741PE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4741PE3/TR12, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1N4741PE3/TR12 part is unused and in its original packaging.
Return procedure for 1N4741PE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4741PE3/TR12 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ4682T1G
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MM5Z5V1ST1G
onsemi
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